Phantasos whose name is "fantasy" or "apparition" is one of the Oneiroi, a trio of gods who are in fact the sons of the god Hypnos, along with Morpheus and Phobetor. Phantasos was the god of surreal dreams; he represents the inanimate objects seen in Prophetic dreams, images of earth, rock, water and wood. This also makes him as a result an aspect of Dream.

Phantasos was one of the sons (triplets, sometimes simply the most prominent three of many) of Hypnos and Pasithea the goddess of relaxation, meditation and hallucinations or Nyx the goddess of night and Erebus god of darkness.

Eerily appropriately, this distinctively unsettling melody actually came to me in a dream – upon waking, I hurriedly hummed the fast fading memory of the melody into the microphone of my mobile phone and was miraculously able to reconstruct this music from my dreamscape for the trembling strings of my lyre!